The SR161 is an entry-level, low-cost, single-channel scanning receiver. It is designed for recreational vessels using a computer with AIS-capable navigation software or RS232 compatible chartplotters, such as the Standard Horizon CP180 and CP300.
For a very simple, low-cost and easy-to-set-up PC-based AIS system, use the SR161, with the Sabrent USB to Serial Adapter
The SR161 can provide years of service when used with a computer's standard RS232 serial port interface, an AISWatchmate or a compatible chartplotter. It is not designed to be used with chart plotters employing a NMEA standard (RS422) interface (such as Raymarine C, E and G Series or Garmin 4000 and 5000 series). If you need an AIS solution for use with a chart plotter, please consider one of our NMEA-compatible AIS receivers or any of our AIS transponders
The SR161 can be used with many popular computer-based marine navigation packages. The following Windows®-based packages have been tested and are known to work with these receivers:
For the Mac, the following packages are recommended:
Any navigation package that can process NMEA VDM data from a serial port should work with the SR161.
- Power supply range: 9 - 15 volts DC
- Power consumption : 1.5 watt
- Format: NMEA 0183 version 3
- Baud rate: 38,400 baud
- Output message: AIVDM
- LEDs: 2 LEDs for receiver and data transfer
- Frequency: AIS1 on 161.975 MHz, AIS2 on 162.025 MHz
- Dual channel scan receiving (SR161)
- Channel spacing: 25 KHz
- Sensitivity: -112dBm
- Demodulation: GMSK
- Antenna impedance: 50 ohms
- Dimensions: 115 x 75 x28 mm
- Weight: 400g
- Connectors: antenna BNC,
- 12 volt wiring
- Serial port
- Output port: 9 pin D socket RS-232 serial
Packages include the AIS Receiver, a 9-pin serial cable, wiring and connector for 12 volt power. Milltech Marine customers are provided with a link where they can download product manuals and free digital charts and software for displaying AIS information.
Some of the data received by the AIS Receiver and relayed to your computer-based navigation system
Type of vessel
Speed over ground
Course over ground
Rate of turn
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